Angle Vocabulary Geometry

Definition: formed by 2 rays with a common endpoint

• bisect

• transversal

• vertex

• angle

Definition: an angle that measures exactly 180 degrees

• straight angle

• acute angle

• obtuse angle

• supplementary angles

Definition: an angle that measures exactly 90 degrees

• straight angle

• right angle

• obtuse angle

• intersecting lines

Definition: It means they have the same size, shape, and measure.

• congruent

• alternate interior angles

• transversal

• complementary angles

Definition: An angle that measures more than 0 degrees but less than 90 degrees.

• acute angle

• obtuse angle

• right angle

• obtuse angle

Definition: Nonadjacent interior angles found on opposite sides of the transversal.

• supplementary angles

• alternate interior angles

• alternate exterior angles

• congruent

Definition: two or more angles that have the same measure

• straight angle

• congruent angles

• complementary angles

• corresponding angles

Definition: a pair of adjacent angles whose non-common sides are opposite rays

• intersecting lines

• supplementary angles

• corresponding angles

• linear pair

Definition: an angle that measures more than 90 degrees but less than 180 degrees

• obtuse angle

• perpendicular lines

• acute angle

• right angle

Definition: interior angles that lie on the same side of the transversal

• alternate interior angles

• same side interior angles

• same side exterior angles

• alternate exterior angles